About Order Total Modules

Fees and Discounts you can add to an order

Order Total modules allow you to add a surcharge or a discount to the order. They also display computed values, such as the order subtotal and order total.

The list of available order total modules may be seen by going to Admin > Modules > Order Total.

Zen Cart has a number of built-in order total modules which allow you to increase or reduce the total owed based on various factors in the order. Increasing the total is done using fees. Reducing the total is done using discounts.

All the line items in an order below the cart contents are order totals. This means the Sub-Total, Tax, Shipping, and Total are displayed via order total modules.

Plugins provide a number of additional fee and discount options:

More order total plugins may be found in the Other Modules section of the Plugins Library.

Developers wishing to create an order total module should see the order total dev FAQs.

Still have questions? Use the Search box in the upper right, or try the full list of FAQs. If you can't find it there, head over to the Zen Cart support forum and ask there in the appropriate subforum. In your post, please include your Zen Cart and PHP versions, and a link to your site.

Is there an error or omission on this page? Please post to General Questions on the support forum. Or, if you'd like to open a pull request, just review the guidelines and get started. You can even PR right here.
Last modified September 13, 2020 by Scott C Wilson (dfc38fe).